722377920 has 224 divisors, whose sum is σ = 2541885696. Its totient is φ = 172339200.

The previous prime is 722377919. The next prime is 722377937. The reversal of 722377920 is 29773227.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 707010 + ... + 708030.

It is an arithmetic number, because the mean of its divisors is an integer number (11347704).

Almost surely, 2^722377920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722377920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270942848).

722377920 is an abundant number, since it is smaller than the sum of its proper divisors (1819507776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722377920 is a wasteful number, since it uses less digits than its factorization.

722377920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 722377920 is about 26877.0891281031. The cubic root of 722377920 is about 897.2665707852.

The spelling of 722377920 in words is "seven hundred twenty-two million, three hundred seventy-seven thousand, nine hundred twenty".